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Assessment of health status of oysters ( Crassostrea gigas ) exposed to environmentally relevant concentrations of Ag and Cu in brackish waters

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorREMENTERIA, Ane
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMIKOLACZYK, Mathilde
dc.contributor.authorPEÑA, Ainhize
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorLANCELEUR, Laurent
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBLANC, Gerard
dc.contributor.authorSOTO, Manu
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSCHAFER, Jorg
dc.contributor.authorZALDIBAR, Beñat
dc.date.accessioned2024-09-30T09:50:43Z
dc.date.available2024-09-30T09:50:43Z
dc.date.issued2017-12-01
dc.identifier.issn1385-1101en_US
dc.identifier.uriorcid:0000-0002-5528-451X:10.1016/j.seares.2017.04.013
dc.identifier.urioai:crossref.org:10.1016/j.seares.2017.04.013
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/202022
dc.description.abstractEnHuman activities have altered estuarine environments leading to increased presence of different pollutants including metals. Although the implementation of new environmental policies has caused a considerable decrease in trace metal concentrations in estuaries around the Bay of Biscay, some elements such as copper (Cu) and silver (Ag) are still present in relatively high concentrations. Oysters have been widely used in environmental biomonitoring programs as sentinel organisms. Oysters Crassostrea gigas from an uncontaminated estuary were exposed to sublethal, environmentally relevant concentrations of Cu (2000 ng Cu/L) and Ag (500 ng Ag/L) during 14 days in brackish water (S = 18). A battery of cell and tissue level (exposure) biomarkers at different levels of biological complexity was applied and integrated into the Integrative Biological Response (IBR) index including: metallothionein contents, intralysosomal metal accumulation, digestive gland atrophy and digestive gland tissue integrity. Condition Index (CI) was incorporated into the IBR index as a complementary parameter that reflects the general physiological condition of oysters (organism level). Results indicated an increase in intralysosomal metal accumulation after 7 and 14 days of exposure to Ag together with an increase in the digestive epithelium atrophy and lipofuscin content after 7 days of exposure to Ag. The responses detected with the aid of biomarkers integrated in the IBR index showed higher toxicity in oysters exposed to Ag, inducing the clear onset of detoxification processes which also occurred, to a lower extent, in Cu-exposed oysters.
dc.language.isoENen_US
dc.sourceorcid
dc.sourcecrossref
dc.title.enAssessment of health status of oysters ( Crassostrea gigas ) exposed to environmentally relevant concentrations of Ag and Cu in brackish waters
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.seares.2017.04.013en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalJournal of Sea Research (JSR)en_US
bordeaux.page229-238en_US
bordeaux.volume130en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamTGMen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04714362
hal.version1
hal.date.transferred2024-09-30T09:50:45Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
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